Difference between revisions of "Ternary operator"
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− | The '''ternary operator''' <code>?:</code> in C++ is the only operator that takes three operands and works similar to an if statement. It must be used carefully, and can lead to obfuscated code. | + | The '''ternary operator''' <code>?:</code> in C++ is the only operator that takes three operands and works similar to an <code>if</code> statement. It must be used carefully, and can lead to obfuscated code. |
+ | |||
+ | <code> a ? b : c </code> is equivalent to <code>if (a) b else c</code>. | ||
<source lang="cpp"> | <source lang="cpp"> |
Latest revision as of 18:39, 23 January 2018
The ternary operator ?:
in C++ is the only operator that takes three operands and works similar to an if
statement. It must be used carefully, and can lead to obfuscated code.
a ? b : c
is equivalent to if (a) b else c
.
int kids;
cin >> kids;
// using if statement
cout << "You have " << kids << " child";
if (kids != 1)
cout << "ren";
cout << endl;
// using ternary operator
cout << "You have " << kids << " child" << ((kids != 1) ? "ren" : "") << endl;
The above code uses the ternary operator to accurately output 0 children, 1 child, 2 children, 3 children, etc.